Why will my AA/C and Heat only blow from defrost vents.

Tiny
CTT
  • MEMBER
  • 2000 CHEVROLET SILVERADO
  • 173,000 MILES
The vent position control switch has no affect on adjusting where the air blows. I changed the whole A/C Heater control module and this did not help.
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Friday, December 30th, 2011 AT 12:39 AM

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Tiny
FIXITMR
  • MEMBER
Must be on other end, the mode door actuator.
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Friday, December 30th, 2011 AT 12:44 AM

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